[Bug 1432104] Re: iThe following packages have unmet dependencies: icedtea-7-jre-jamvm: Depends: openjdk-7-jre-headless (= 7u75-2.5.4-1~precise1) but 7u55-2.4.7-1ubuntu1~0.12.04.2 is installed Depends: zlib1g (>= 1:1.1.4) but 1:1.2.3.4.dfsg-3ubuntu4 is installed openjdk-7-jre: Depends: openjdk-7-jre-headless (= 7u75-2.5.4-1~precise1) but 7u55-2.4.7-1ubuntu1~0.12.04.2 is installed Depends: libjpeg8 (>= 8c) but 8c-2ubuntu7 is installed

[vinh.]

After updating your package information, the essential package 'ubuntu-minimal' could not be located. This may be because you have no official mirrors listed in your software sources, or because of excessive load on the mirror you are using. See /etc/apt/sources.list for the current list of configured software sources.
In the case of an overloaded mirror, you may want to try the upgrade again later.

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https://bugs.launchpad.net/bugs/1432104

Title:
  iThe following packages have unmet dependencies:  icedtea-7-jre-jamvm:
  Depends: openjdk-7-jre-headless (= 7u75-2.5.4-1~precise1) but
  7u55-2.4.7-1ubuntu1~0.12.04.2 is installed
  Depends: zlib1g (>= 1:1.1.4) but 1:1.2.3.4.dfsg-3ubuntu4 is installed
  openjdk-7-jre: Depends: openjdk-7-jre-headless (=
  7u75-2.5.4-1~precise1) but 7u55-2.4.7-1ubuntu1~0.12.04.2 is installed
  Depends: libjpeg8 (>= 8c) but 8c-2ubuntu7 is installed

Status in update-manager package in Ubuntu:
  New

Bug description:
  The package system is broken

  Check if you are using third party repositories. If so disable them, since they are a common source of problems.
  Furthermore run the following command in a Terminal: apt-get install -f

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: update-manager 1:0.156.14.15
  ProcVersionSignature: Ubuntu 3.2.0-55.85-generic-pae 3.2.51
  Uname: Linux 3.2.0-55-generic-pae i686
  NonfreeKernelModules: wl
  ApportVersion: 2.0.1-0ubuntu17.6
  Architecture: i386
  Date: Sat Mar 14 09:11:28 2015
  DpkgHistoryLog.txt:
   
  DpkgTerminalLog.txt:
   
  GsettingsChanges:
   
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_US:en
   TERM=unknown
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: update-manager
  Symptom: ubuntu-release-upgrader-core
  UpgradeStatus: Upgraded to precise on 2015-03-14 (0 days ago)

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